Power grid risk assessment method based on weather factors

Abstract

The invention discloses a power grid risk assessment method based on weather factors. A consequence value is a product of a consequence severity score and a social influence factor value; wherein theprobability value is a product of an equipment type factor value, a fault type factor value, a historical data statistics factor value, a weather influence factor value, an equipment defect influencefactor value, an overhaul management factor value, an overhaul time factor value, a field construction influence factor value and a control measure factor value; and a product of the consequence valueand the probability value is calculated, the product is recorded as a risk value, the risk value is compared with a range value corresponding to the risk level, and the risk level corresponding to the risk value is judged, thereby completing power grid risk assessment. The power grid risk assessment method is not only suitable for risk assessment of the coastal region power grid, but also meets the requirement of lean management of the power grid, and can provide more accurate risk prediction for the coastal region power grid so as to prevent risks in advance and reduce unnecessary loss.

Description

technical field [0001] The invention belongs to the technical field of power grid risk assessment, and in particular relates to a weather factor-based power grid risk assessment method. Background technique [0002] At present, the power industry has entered a new stage of high voltage, large units, high automation, and AC / DC hybrid power grids. The grid network structure has become increasingly complex, and the operating characteristics of the system have undergone profound changes. The safe and stable operation of the grid is facing huge challenges. pressure. On July 30 and 31, 2012, two large-scale power outages occurred in India successively, affecting 370 million and 670 million people respectively, becoming the largest power grid power outage affecting the largest population in history in the world. In China, with the rapid development of social economy, the scale of my country's power grid is also increasing. How to ensure the safe and stable operation of the power g...

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Problems solved by technology

[0005] At present, China Southern Power Grid Corporation provides a risk assessment standard, but it does not take into account weather factors such as typhoons and high temperature that coastal areas may suffer. Therefore, this risk assessment standard cannot fully reflect the operational risks of power grids in coastal areas

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